Outlier
Mostrando 1-12 de 78 artigos, teses e dissertações.
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1. On the classification and treatment of outliers in a spatial context: A Bayesian Updating approach
Abstract Checking and treating extreme values is commonplace in modelling workflows. The main methods to manage outliers may be categorized into graphical, Kriging- and simulation-based approaches. While graphical methods usually classify outliers from a global perspective, geostatistical methods evaluate outliers in a local context. Ordinary-Kriging based a
REM, Int. Eng. J.. Publicado em: 2021-09
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2. DIAGNOSIS AND SPATIAL VARIABILITY OF SOIL FERTILITY AND CROP PRODUCTION IN A TEAK AREA IN EASTERN PARÁ STATE.
ABSTRACT This study aims to generate the diagnosis and spatial variability maps of soil fertility attributes, as well as teak (Tectona grandis L.f.) production through geostatistics. The study was conducted on a commercial farm in the municipality of Capitão Poço, state of Pará, Brazil. Soil and yield data were collected from 155 sampled georeferenced poi
CERNE. Publicado em: 2020-03
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3. Data processing within rows for sugarcane yield mapping
ABSTRACT: The mapping of sugarcane yield is still not as widely available as it is for grain crops. Sugarcane harvesters cut and process the cane in a single or maximum of two rows, facilitating the monitoring of cane yield and its behavior on a small scale. This study tested a method for sugarcane yield data cleaning, investigating if the data recording fre
Sci. agric. (Piracicaba, Braz.). Publicado em: 20/12/2019
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4. OUTLIER=GROSS ERROR? DO ONLY GROSS ERRORS CAUSE OUTLIERS IN GEODETIC NETWORKS? ADDRESSING THESE AND OTHER QUESTIONS
Abstract This article has theoretically discussed some points regarding outliers caused by errors in geodetic observations (see consideration made). Comments have also been made on the usual 3σ-rule to identify outliers and its common approachs in the simulation of outliers in geodetic networks. Three simulated experiments have been conducted to verify the
Bol. Ciênc. Geod.. Publicado em: 14/10/2019
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5. ROBUST METHODOLOGY FOR DETECTION OF SPIKES IN MULTIBEAM ECHO SOUNDER DATA
Abstract Currently, during the operation in shallow waters, scanning systems, such as multibeam systems, are capable of collecting thousands of points in a short time, promoting a greater coverage of the submerged bottom, with consequent increase in the detection capacity of objects. Although there has been an improvement in the accuracy of the depths collec
Bol. Ciênc. Geod.. Publicado em: 14/10/2019
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6. DELINEATION OF HOMOGENEOUS ZONES BASED ON GEOSTATISTICAL MODELS ROBUST TO OUTLIERS
RESUMO Diversas pesquisas utilizam medidas de condutividade elétrica aparente do solo (CEa) como indicador da variabilidade espacial de atributos físico-químicos existentes no campo de produção. Com base nestas medidas, zonas de manejo (ZM) são delineadas para aperfeiçoamento da gestão agrícola. Entretanto, estas amostras têm apresentado presença
Rev. Caatinga. Publicado em: 18/07/2019
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7. “So Were I Equalled in Renown”: Autobiographical Elements and the Epic Poet’s Career in Milton
Abstract: John Milton is outlier among poets of the seventeenth century in his extensive recourse to details of his personal life, which are made integral part, covertly or explicitly, of his many works. From the early “Nativity Ode” onwards we can identify confessional passages in many of his poems that can be read autobiographically. What draws our att
Ilha Desterro. Publicado em: 20/05/2019
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8. Planejamento de redes geodésicas baseado no critério de identificação de outlier: um exemplo aplicado à rede de nivelamento
Resumo: Nós apresentamos um método de simulação numérica para planejamento de redes geodésicas. O critério de qualidade considerado é baseado no poder do teste do procedimento estatístico data snooping. Esse critério expressa a probabilidade do procedimento data snooping de identificar corretamente um outlier. Em geral, o valor do poder do teste é
Bol. Ciênc. Geod.. Publicado em: 2018-06
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9. AVALIAÇÃO DE ESPECTRÔMETRO NIR PORTÁTIL E PLS-DA PARA A DISCRIMINAÇÃO DE SEIS ESPÉCIES SIMILARES DE MADEIRAS AMAZÔNICAS
Supervising wood exploitation can be very challenging due to the existence of many similar species and the reduced number of wood identification experts to meet the demand. There is evidence that valuable endangered wood species are being smuggled disguised as other species. Near infrared spectroscopy (NIRS) and chemometrics has been successfully used to dis
Quím. Nova. Publicado em: 2017-05
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10. MERCADO IMOBILIÁRIO DE UMA METRÓPOLE BRASILEIRA: CRESCIMENTO SUSTENTADO OU BOLHA ESPECULATIVA?
RESUMO Objetivo: Analisar o setor imobiliário de uma metrópole brasileira no período recente de grande valorização do ativo no país e investigar se há indícios de bolha especulativa neste mercado. Originalidade/lacuna/relevância/implicações: O artigo apresenta uma versão do Índice Case-Shiller que retrata a evolução da relação entre os pr
RAM, Rev. Adm. Mackenzie. Publicado em: 2017-04
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11. Detecção de outliers usando um modelo de observações de erro
O estimador dos Mínimos Quadrados Total é muito sensível à presença de outliers no modelo de observações de erro. Neste trabalho apresenta-se um novo modelo para detecção de outliers baseado na técnica data-snooping. Primeiro, é proposto um método iterativo para determinar o estimador dos Mínimos Quadrados Total na teoria dos Mínimos Quadrados.
Bol. Ciênc. Geod.. Publicado em: 2017-03
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12. Fragmental Method KowWIN as the Powerful Tool for Prediction of Chromatographic Behavior of Novel Bioactive Urea Derivatives
A series of the new urea derivatives with antinociceptive activity has been chromatographically evaluated using reversed phase materials: Zorbax Extend-C18, Cogent UDC Cholesterol with organic-aqueous eluent systems with two organic modifiers (methanol and acetonitrile). The chromatographic lipophilicity parameters: log kw, S and φ0 were determined basing o
J. Braz. Chem. Soc.. Publicado em: 2016-12